body,html
  line-height: 1
  font-weight: 200
  font-family :'PingFang SC','STHeitisc-Light','Helvetica-Light',Arial, sans-serif
.clearfix
  display :inline-block
  &:after
    display: block
    content:''
    height:0
    line-height 0
    clear:both
    visibility :hidden
@media (-webkit-min-device-pixel-ratio: 1.5),(min-device-pixel-ratio: 1.5)
  .border-1px
    &::after
      -webkit-transform: scaleY(0.7)
      transform: scaleY(0.7)

@media (-webkit-min-device-pixel-ratio: 2),(min-device-pixel-ratio: 2)
  .border-1px
    &::after
      -webkit-transform: scaleY(0.5)
      transform: scaleY(0.5)
